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Question: The average cost for the sample of 5 sales of a product

Question: The average cost for the sample of 5 sales of a product
is = $230 and the sample standard deviation is s = $17.50. The hypothesized mean is μ0 = $250. Compute the value of the test statistic.

Answer: -2.56. ***But how to graph it out in Excel?***

 
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